Created
March 4, 2015 03:18
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JavaScript作用域
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| function a(x,y){ | |
| y = function() { x = 2; }; | |
| return function(){ | |
| var x = 3; | |
| y(); | |
| console.log(x); | |
| }.apply(this, arguments); | |
| } | |
| a(); |
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https://gist.github.com/zry656565/a420989bfa8cb832addd 加了句代码，也许能帮助你理解。